For a random variable $X, E(X)=3 $ and $ - CUETMOCK

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Target Exam

CUET

Subject

-- Mathematics - Section B2

Chapter

Numbers, Quantification and Numerical Applications

Question:

For a random variable $X, E(X)=3 $ and $E(X^2)=11.$ Then value of Var(2X) is :

Options:

8

5

4

2

Correct Answer:

8

CUET Questions